http/tests/loading/resourceLoadStatistics/clear-in-memory-and-persistent-store-one-hour.html is a flaky failure on macOS High Sierra according to the flakiness dashboard:
This seems to have been happening since the queue was brought up, however the dashboard does not go back that far.
@@ -4,6 +4,8 @@
main frame - didFinishDocumentLoadForFrame
main frame - didHandleOnloadEventsForFrame
main frame - didFinishLoadForFrame
-PASS Host classified as prevalent resource.
-PASS Host is no longer a prevalent resource after the store was cleared.
+#PID UNRESPONSIVE - com.apple.WebKit.WebContent.Development (pid 3938)
+FAIL: Timed out waiting for notifyDone to be called
Original comment says flaky failure, but this is a flaky timeout.
Marked as flaky in:
*** Bug 180658 has been marked as a duplicate of this bug. ***
Updating title since this isn't limited to High Sierra. Also skipping the test entirely because it times out so frequently.
Hopefully resolved in https://trac.webkit.org/changeset/227223, https://bugs.webkit.org/show_bug.cgi?id=181822.